Pile wire



A. F. MCCOLLUM. FILE WIRE.

APPLICATION men 53.24. 1920.

1,405,239. Patented J an. 31, 1922. f

1 Raw ,q e zzm wlm UNITED STATES PATENT. v OFFICE. j

ALFRED F. MCGOLLUM, OF BLOOMSIBURG,

CARPET (30., OF BLOOMSBURG, PENNS VANIA.

PENNSYLVANIA, ASSIGNOR TO THE MAGEE YLVANIA, A CORPORATION OF PENNSYL- PILE WIRE.

Specification of Letters Patent. Patented Jan; 31, 1922,

Application filed February 24, 1920. Serial No. 360,929.

To all whom it may concern:

Be it known that I, ALFRED F. McCoLLUM, a citizen of the United States, residing in Bloomsburg, Columbia County, Pennsyl- 5 vania, have invented PileVVires, of which the following is-a specification,

One object of my invention is to provide a pile wire particularly adapted for use in described and claimed in such as tocause it to support a pile cutting knife in the customary manner while permitting it to cooperate with a similar adjacent pile wire in guiding said knife ;the invention contemplating a construction which as compared with that previously used for.

the same purpose, shall be simpler, less expensive and at the same time capable of properly performing the functions hitherto required of pile wire of a U-shaped section. These objects and other advantageous ends I attain as hereinafter set forth, reference being had to the accompanying drawings, in which,

Fig. l is aside elevation of a pile wire made in accordance with my invention;

Fig. 2 is a transverse vertical section on an enlarged scale and taken on the line 2-2, Fig. 1; V

Fig. 3 is a fragmentary side elevation of a pile wire illustrating its relation with. the

pile cutting knife; and

-Fig. 4 is an end elevation of a series of pile wires, further illustrating the invention. In the above drawings, 1 represents a butt or head having connected to it one end of a pile wire 2 which, in accordance-with my" invention, is substantially L-shaped in transverse section. The second or free end of each wire is somewhat sharpened as shown and a series of wires'of the above'noted construction is utilized in a carpet or similar loom, being manipulated in the manner and by the mechanism illustrated in my above mentioned patent. Under conditions of use the pile a: is woven over said wires as indicated in Figs.

3 and 4 and is thereafter cut by a travelling knife blade 3 whose flat base engages and slides upon the base portion 4. of the wire.

Said knife is guided not only bythe side portion 5 of the wire on whose base it is sliding, but if need be, is also guided by the outside surface of the side portion of the adjacent wire as it moves from one end thereof to the other and by means of its inclined edge 6 cuts the pile woven over said wire.

Under operating conditions the wires are successively inserted in the web with their base portions 4 directed toward the reed of the loom, it being noted that the side portion 5 of each wire serves as the form over which the pile is shaped or drawn as it is woven, while the base portion not only serves as a guide for the knife but also acts as a stiffening means for said side portion. After the pile on any wire is cut, it is drawn out suit-able mechanism and is replaced in another position nearer the reed. 'If it be assumed that a certain width'of the base a is necessary to properly support the knife, then it is'obvious that a wire made in ac-' cordance with my invention may be narrower than the well known pile wire of u-shaped section by an amount equal to the thickness of the second side portion which is omitted.

Obviously therefore it is possible to utilize a greater number of pile wires per inch if they'be made in accordance with my invention.

I claim:

1. A pile wire having that portion which is to be woven into the fabric formed of substantially L-shaped cross section.

2. A pile wire having a flat base and a single side portion extending for substantially the entire length ofthe wire substantially at right angles to said base portion.

portion v3. The combination of a series of parallel I pile wires each of substantially L-shaped section; with a pile cutter movable over the base portions of said pile wires and guided by the side portions of two adjacent wires.

4. A pilewire having a base portlon and a single side portion extending substantially at right angles thereto, said side portion be- I ing of a height materially greater than the width of the base portion.

witpess whereof I flix my signature.

ALFRED F. MGQOLLUM. 

